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Aztec Triple Alliance

Type Object Region Mexico Time 1428–1521

The Aztec Triple Alliance, formed in 1428, was a military-political alliance of Tenochtitlan, Texcoco, and Tlacopan, with Tenochtitlan dominant.

Timeline

  1. 1428Valley of Mexico · Valley of MexicoThe three cities jointly defeated the hegemon of Azcapotzalco and established the alliance. Tribute was divided four to two to one (Tenochtitlan, Texcoco, Tlacopan), with military command concentrated in Tenochtitlan.
  2. 1440–1469Valley of Mexico and surroundings · MexicoDuring Moctezuma I's reign the alliance launched a series of conquests, extending its control to the Gulf Coast and Oaxaca, while the tribute system and network of vassal city-states became increasingly perfected.
  3. 1461–1470Valley of Mexico · Valley of MexicoThroughout the decade the alliance continued to campaign outward from the valley, launching a military operation against Tepeyacac in 1465. Power passed to Axayacatl in 1469, and the alliance's military machine kept running.
  4. 1481–1521Territory of the Aztec Empire · MexicoAxayacatl and his successors continued to expand, and the alliance's control reached its greatest extent in history. After the fall of Tenochtitlan in 1521 the alliance dissolved, and the vassal city-states one by one defected to the Spanish.

Sources